Welcome to the National Center for Charitable Statistics
NCCS is a research center and open data platform dedicated to advancing the knowledge and understanding of the nonprofit and charitable sector.
NCCS is part of the Center on Nonprofits and Philanthropy at The Urban Institute
Datasets
The data catalog contains a broad array of data on the nonprofit sector including IRS 990 tax data, survey panels, and political action committees.
Census Crosswalks
A framework for seamlessly adding census data to your nonprofit panel.
IRS 990 Efilers
A comprehensive panel of nonprofit organizations that file IRS form 990.
Form 990-N ePostcard Filers
A database of small nonprofits that do not file full 990 forms.
Pub78 - Nonprofits Eligible to Receive Tax Deductible Donations
The catalog of all nonprofits currently eligiable to receive tax-deductible donations.
Revocations Database
Database of all nonprofit entities that have had their tax exempt status revoked
SOI Exempt Organizations Microdata
The statistics of nonprofit charitable and other tax-exempt organizations produced by the Statistics of Income (SOI) Division.
527 Political Action Committees
Electronic filings made by 527 organizations.
Business Master File (BMF)
All active organizations that have been granted nonprofit status by the IRS.
Getting Started with NCCS Data
Learn more about the NCCS data series through the research handbook.
NCCS Research GuideEstimating Sector Size With Payroll Taxes
This data story outlines the process for estimating the amount of payroll taxes nonprofits pay annually.
Regulation of Nonprofits and Philanthropy Project
A project advancing research and practice on nonprofit regulatory frameworks and their impact on the sector
National Taxonomy of Exempt Entities (NTEE) Codes
IRS Activity Codes Used to Categorize Nonprofits
2019 Nonprofit Sector in Brief
The 2019 Sector Brief discusses trends in the number and finances of 501(c)(3) public charities and key findings on two important resources for the nonprofit sector: private charitable contributions and volunteering.
2018 Nonprofit Sector in Brief
The 2018 Sector Brief discusses trends in the number and finances of 501(c)(3) public charities and key findings on two important resources for the nonprofit sector: private charitable contributions and volunteering.
2015 Nonprofit Sector in Brief
The 2015 Sector Brief discusses trends in the number and finances of 501(c)(3) public charities and key findings on two important resources for the nonprofit sector: private charitable contributions and volunteering.